220121120121271 has 2 divisors, whose sum is σ = 220121120121272. Its totient is φ = 220121120121270.

The previous prime is 220121120121197. The next prime is 220121120121341. The reversal of 220121120121271 is 172121021121022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220121120121271 - 2¹³ = 220121120113079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121120121871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060560060635 + 110060560060636.

It is an arithmetic number, because the mean of its divisors is an integer number (110060560060636).

Almost surely, 2^{220121120121271} is an apocalyptic number.

220121120121271 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121120121271 is an equidigital number, since it uses as much as digits as its factorization.

220121120121271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 220121120121271 its reverse (172121021121022), we get a palindrome (392242141242293).

The spelling of 220121120121271 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, two hundred seventy-one".